Home / 643,542.15-965,100.60-216,962.94

Finding the Fourth Proportional to 643,542.15, 965,100.60 and 216,962.94

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Solution

The fourth proportional to 643,542.15, 965,100.60 and 216,962.94 is: 325,372.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,542.15 : 965,100.60 = 216,962.94 : x
  2. Step 2: Convert to fraction form
    643,542.15/965,100.60 = 216,962.94/x
  3. Step 3: Cross multiply
    643,542.15x = 965,100.60 × 216,962.94
  4. Step 4: Simplify right side
    643,542.15x = 209,391,063,571.76
  5. Step 5: Solve for x
    x = 209,391,063,571.76/643,542.15
  6. Step 6: Final answer
    x = 325,372.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.